Add mechanism for installing useful git hooks

ctrueden · ctrueden · commit 03dda269da65 · 2013-06-07T13:28:51.000-05:00
Run install-git-hooks.sh to install all pre-commit hooks (in the
hooks subdirectory) into the git repository at the CWD.

An existing pre-commit script is not overwritten, but appended to.
A non-existent pre-commit script is created.
Already-installed hooks are not installed again.
diff --git a/hooks/README.txt b/hooks/README.txt
@@ -0,0 +1 @@
+This folder contains hooks installed by the bin/install-git-hooks.sh script.
diff --git a/install-git-hooks.sh b/install-git-hooks.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+#
+# install-git-hooks.sh
+#
+
+# A script to install recommended git hooks into your .git/hooks folder.
+# It will append them without overwriting any existing hooks you have.
+
+HOOK_DIR="$(dirname "$0")/hooks"
+
+PRE_COMMIT=.git/hooks/pre-commit
+
+# must be run from toplevel of repository
+if [ ! -d .git ];
+then
+	echo "Must be run from toplevel of a git repository!"
+	exit 1
+fi
+
+# create pre-commit hook if it does not already exist
+if [ ! -e "$PRE_COMMIT" ];
+then
+	echo "Creating: $PRE_COMMIT"
+	echo '#!/bin/sh' >> "$PRE_COMMIT"
+	echo >> "$PRE_COMMIT"
+	chmod +x "$PRE_COMMIT"
+fi
+
+# inject bin/hooks calls into relevant git hook scripts
+for f in "$HOOK_DIR/pre-commit-"*;
+do
+	if ! grep -q "$f" "$PRE_COMMIT"
+	then
+		echo "Installing: $f"
+		echo "$f" >> "$PRE_COMMIT"
+	fi
+done

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+This folder contains hooks installed by the bin/install-git-hooks.sh script.`